Monday, May 1, 2017

Domain Name Service Cheat Sheet

Domain Name Service


First look for domain name to IP mapping is done through Host file and if not exist it look up in server domain cache. If the mapping is not available in host and aswell as in DNS cache it will eventually look up into DNS server.
  1. Host- This is host file C:\Windows\System32\drivers\etc\hosts
  2. DNS Cache
  3. DNS Server



Sr.No
DNS Attribute
Remark
1
Ipconfig/flushdns
Flush DNS Cache
2
Ipconfig/displaydns
Display DNS Details
3
Forward DNS Lookup
Internet domain name to find an IP address
4
Reverse DNS Lookup
Internet IP address to find a domain name.
5
Root Hint

6
Authorative DNS Response
Contains Address reference in Enterprise DNS server
7
Non Authorative DNS Response
Available either in non enterprise root dns server
8
Cache DNS Path
C:\Windows\System32\dns\cache.DNS
9
Wireshark
To intercept all network protocal
10
Addr ARPA-.in-addr.arpa (inverse address)
Translate IP address to a hostname
11
PTR-record Reverse DNS
Translaate Hostnmae to IP address
12
Cname - Canonical Name
The ALIAS record maps a name to another name, but in turns it can coexist with other records on that name
13
Load balancing
Netmasking Ordering
Identify default gateway Ip and subnet of incoming request and based on zone/Subnet it allows the access to server.
14
Round Robin
Based on availability and if server is not busy it will access and route request to the given server
15
FQDN
Fully Qualified Domain Name
16
DNS Resolution

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